Tentering clip



May 2. 1933.

J. E. PETERSQBL TENTERING CLIP m mm En a ma P E .n. m J

BY ms ATTO M y 2, 3- J. E. PETERSON I 1,

TENTERING CLIP Original Filed Nov. 15, 19:50 s Sheets-Sheet 2 Jahnz'. air/PSO 1 1.

BY Hus ATTORNE ENVENTOR,

May .1933- J. E. PETERSON TENTERING CLIP Original Filed Nov. 15, 1930 3 Sheets-Sheet 3 INVENTOR Patented May 2, 1933' UNITED STATES PATENT OFFICE I JOHN E.'PE'1'EBSON, E IBVINGTON, NEW JERSEY, ASSIGNOB TO VAN VLAANDEBEN CHINE COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY TENTERIN OLQEP Continuation 01! application Serial no. 495,071, filed November 15, 1930. This application 111m mm Q 27,1981. Serial No. 559,718.-

This invention relates to tentering clips for cloth tentering machines. The principal object of the invention is to provide a tentering clip whose movablejaw will not be permltted to close unless cloth is entered into the cllp, it being known that the occurrence of closing without cloth being present in the cl1p (as on every idle or return run of the chp as a part of an endless chain comprising such chps, or when for some reason the cloth failsto be entered on an active run, or whenever the machine is 0 rated without cloth) produces considerab e wear of the jaws requiring constant attention to insure good gripplng condition. My invention accomplishes this result in a simple way, requiring in fact butthe addition of. a single part. Indeed, where according to the known practice-the clip isto be prevented from gripping the cloth except more or less near its .very'edge, it is possible by my invention that such part serve not only to prevent the closing movement of the move able jaw if cloth fails to be entered but to insure the grip being efiected more or less near the actual edge of the cloth.

In the drawings,

Fig. 1 shows the raceway of a tentering machine and a chain of one form of the improved cli s in transverse section;

ig. 2 is a pears in Fig. 1;

Fig. 3 is a front-elevation thereof;

v Fig. 4 shows a clip of said form in front-torear vertical and nearly central section, the

solid lines showin the movable parts as they stand when the c ip is open and the dotted lines showin them when the clip is nearly closed and t e hereinafter described check shifted by the entered cloth from checking relation to the movable j aw;

Fig. 5 shows said clip as in Fig. 4 and the check in checking relation to the movable aw;

- Figs. 6, 7 and 8 are fragmentary front-torear vertical and nearly central sections of the other form of the clip, Fig. 6 showing the movable jaw closed on the cloth; Fig. 7 said jaw held from contact with the fixed jaw by the check, and Fig. 8 the movable jaw open.

Let 1 represent the raceway on which a plan of substantially what apor back race 3. Thefixed jawof each clip comprises a fork 4 and a plate 5 to which the fork is secured and which forms the part.

of the clip that engages races 2 and 3',

such jaw may form with other such jaws the alternate or'clip links in the chain whose connecting members are intermediate links 6. 7 IS the movable jaw,-which in this example is pivotedat .8 to the jaw carrier 9 in turn pivoted at 10 to the fork 4 of the fixed jaw and being a lever from which, when it engages astop 11 against which it is normally urged by a spring 12, jaw 7 depends, so that the latter is then free, if cloth is entered between it and the plate 5, to coact with said plate to grip the cloth in response to any eifort of the cloth to displace said jaw to the left in Fig. 1, for example, as when the clip and the companion clip of the opposite chain J aw 7 is cleared from the cloth, when the cams (as ain Fig. 8) of the machine act on arm 9a of carrier 9 to shift the carrier from stop 11, by contact of the abutment 9b with the jaw. I do not wish to be limited to the supporting of jaw 7 through any intermediary, such as 9. So much follows a well-known construction.

Referring now to the form shown in Figs. 1-to 5: 13 is the mentioned check pivoted on a pin 14 of arms 7a of jaw 7 and movable in a plane cutting the grip-line of the jaws and having its left-hand orouter end the heavier and its other end a hook normally tending to catch on the fixed jaw, to wit, on a pin 15 thereof, due to the weight of its outer end. Whenever, the clip being open, jaw 7 descends with no cloth a entered between the outer end of the check and the fixed jaw (at 5),-

such descent is stopped by catching of the cloth-gripping position (dotted lines, Fig.

allow the jaw 7 to fall to grip the cloth until,

as the clip recedes from the cloth, the latter stands well withdrawn from the clip, the check thus acting as the well known controller to interrupt the closing movement of jaw 7 so that the grip of the jaws will take place more or less near the very edge of the cloth. When the jaw is next raised the hook of the check, which was left under pin 15, engages said pin and the check is first tilted clockwise by the pin until its point clears the same,

whereupon gravity tilts the check back to its normal position for catching on the pin on the ensuing down stroke of the jaw.

Figs. 6 to 8: Here the check, 18, is pivoted to the fixed jaw in a plane cutting the grip-line of the jaws and catches on the movable jaw. Said check has a slot 19 receiving the pin 15 and a slot 20 receiving pin 14 and formed with a bent-oil extension terminating in a seat 20! Assume the clip is gripping the cloth (Fig. 6). On the next opening movement of jaw 7, as pin 14 approaches pin 15 the lower end of slot 19 will engage pin 15 to stop the incidental lifting of the check by the jaw and pin 14 now travels to the bent-off extension of slot 20, allowing the check to fall by gravity so as to be positioned for pin 14 to catch on seat 20a on the next descent of the jaw. On such next descent of the jaw, if no cloth is present, the upper end of slot 19 will come to rest on pin 15 and pin 14 will come to rest on the seat, so that jaw 7 is prevented from closing, as in Fig. 7. This check, as the one first described, thus normally (that is, always unless cloth is present) tends to obstruct closing movement of jaw 7. If cloth is present, the catching of in 14 on the seat, 20a does not occur because ig. 8, dotted outline of the check) the cloth stops descent of the check while pin 14 continues to swing downward with the jaw and so clears the seat. This check may also serve as a feeler or controller to interrupt closing movement of jaw 7, to wit, by resting on the cloth over slot 16 to support jaw 7 against moving quite to the cloth-gripping position until, as the clip recedes from the cloth, the free end of the feeler clears the edge of the cloth and thus allows the jaw to fall. A slot 19, rather than a plain hole receiving pin 15, is desirable as invariably resulting in the check releasing the movable jaw when the latter descends with cloth present because the check in such case is capable not only of pivotal but of sliding movement on pin 15.

The essential feature of this invention, it will now be apparent, isa check (possible of being made to consist of but a single part, as in both examples disclosed) normally positioned to obstruct-movement of the movable jaw toward the other jaw but actuable by the cloth to free the former for such movement thereof, in the examples on movement of said check with the movable jaw toward the other The movable aw 7 preferably has its gripping portion 7a: a blade formed separately, as of steel, and embedded in the jaw body in casting the latter, as by die-casting. The blade 7w has one or. more recesses 7 3 formed in it, and when the body of the jaw is cast the metal fills this recess so that the blade becomes permanently held in place. In previous constructions where the blade was embodied in the body it was held by rivets or the like, which in time worked loose leaving the blade loose and hence failing to grip the cloth accurately or with certainty.

This application is a continuation of my application Serial No. 495,871.

Havin thus fully described my invention what I c aim is:

'1. A tentering clip including a pair of jaws one of which is movable toward and from the them and a check normally positioned to obstruct movement of said movable jaw. toward the other jaw but actuable by the .cloth to -free the movable jaw for such movement thereof. 4 Y

2. A tentering clip including a pair of jaws one of which is movable toward and from the other and when moved toward the other being adapted to grip cloth situated between them and a check movably connected to one jaw and normally positioned to engage the other jaw to thereby obstruct movement of said movable jaw toward the other jaw, said check being actuable by the cloth to free the movable jaw for such movement thereof.

3. A tentering clip including a pair of jaws one of which is movable toward and from the other and when moved toward the other being adapted to grip cloth situated between them and a check movably connected to one jaw and normally positioned to engage the other jaw to thereby obstruct movement of said movable jaw toward the other jaw, said check being actuable by the cloth on movement of said check with the movable jaw toward the other jaw, to free the movable jaw for such movement thereof.

4. A tentering clip including a pair of jaws one of which is movable toward and from the other and when moved toward the other being adapted to grip cloth situated between 5. A tentering clip including a pair of jaws one of which is movable toward and from the other and when moved toward the other being adapted to rip cloth situated between them'and a chec movably connected to the fixed jaw and normally positioned to engage the other jaw to thereby obstruct movement of said movable jaw toward the other jaw, said check being actuable by the cloth to free the movable jaw for such movement thereof.

6. A tentering clip including a pair of jaws one of which is movable toward and from the other and when moved toward the other being adapted to grip cloth situated between them, and a feeler arranged to be interposed between the entered portion of the cloth and the movable jaw and adapted thereby to interrupt said movement of the movable jaw until on the retraction of the clip from the cloth'the feeler clears the cloth, said feeler formin a check normally positioned to positively o struct said movement of the movable jaw but actuable by the cloth when entered between the jaws to free the movable jaw for such movement.-

In testimony whereof I aflix my signature.

' JOHN E. PETERSON, 

